ENTRY AND START SYSTEM (for Entry Function) Driver Side Door Entry Lock and Unlock Functions do not Operate

DESCRIPTION

When the driver side door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) the power door lock control system, 2) the front door outside handle assembly (for driver side), or 3) the certification ECU.

WIRING DIAGRAM

A01DSJME01

INSPECTION PROCEDURE

Note


  • The entry and start system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the intelligent tester and vehicle begins.

  • Check that there are no electrical key transmitters in the vehicle.

  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output Click here.

  • When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations depending on the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.

  • Before replacing the certification ECU, refer to the Service Bulletin.

PROCEDURE


  1. CHECK POWER DOOR LOCK OPERATION


    1. When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation Click here.

      OK
      Door locks operate normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

  2. CHECK WAVE ENVIRONMENT


    1. Bring the electrical key transmitter approximately 0.3 m (0.984 ft.) from the door outside handle (for driver side) and perform a driver side door entry lock and unlock operation check Click here.

      Note

      If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible.

      Tech Tips


      • When the electrical key transmitter is brought near the driver side door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.

      • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

      OK
      Entry function operates normally.

    NG

    READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH) Click here

    OK

    AFFECTED BY WAVE INTERFERENCE

  3. READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Main Body / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos*1 Front RH side door lock position switch signal / UNLOCK or LOCK

      UNLOCK: Front RH side door unlocked

      LOCK: Front RH side door locked

      		 -
      FL Door Lock Pos*2 Front LH side door lock position switch signal / UNLOCK or LOCK

      UNLOCK: Front LH side door unlocked

      LOCK: Front LH side door locked

      		 -

      • *1: for RHD

      • *2: for LHD

      OK
      On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door Lock/Unlock Functions do not Operate) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - CERTIFICATION ECU)


    1. Disconnect the O1*1 or N1*2 handle connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the G38 ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      O1-3 (ANT2) - G38-4 (CG1B) Always Below 1 Ω
      O1-6 (ANT1) - G38-3 (CLG1) Always Below 1 Ω
      O1-5 (B) - G38-32 (POS1) Always Below 1 Ω
      O1-2 (GND) - Body ground Always Below 1 Ω
      G38-4 (CG1B) - Body ground Always 10 kΩ or higher
      G38-3 (CLG1) - Body ground Always 10 kΩ or higher
      G38-32 (POS1) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      N1-3 (ANT2) - G38-4 (CG1B) Always Below 1 Ω
      N1-6 (ANT1) - G38-3 (CLG1) Always Below 1 Ω
      N1-5 (B) - G38-32 (POS1) Always Below 1 Ω
      N1-2 (GND) - Body ground Always Below 1 Ω
      G38-4 (CG1B) - Body ground Always 10 kΩ or higher
      G38-3 (CLG1) - Body ground Always 10 kΩ or higher
      G38-32 (POS1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK CERTIFICATION ECU (OUTPUT SIGNAL)


    1. A01DOMME38
      Text in Illustration
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to Front Door Outside Handle Assembly [for Driver Side])

      Disconnect the O1*1 or N1*2 handle connector.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      O1-3 (ANT2) - O1-6 (ANT1) Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      O1-5 (B) - Body ground Engine switch off → on (IG) 9 to 14 V → Below 2 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      N1-3 (ANT2) - N1-6 (ANT1) Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      N1-5 (B) - Body ground Engine switch off → on (IG) 9 to 14 V → Below 2 V

    NG

    REPLACE CERTIFICATION ECU

    OK

  6. REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE)


    1. Temporarily replace the front door outside handle assembly (for driver side) with a new or normally functioning one Click here.


    NEXT

  7. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (OPERATION)


    1. Check that the entry functions operate normally Click here.

      OK
      Entry functions operate normally.

    NG

    REPLACE CERTIFICATION ECU

    OK

    END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY IS DEFECTIVE)